Patent attributes
The transmission comprises a sun gear fixed to an input shaft, four pinions, and a carrier part connected to an output shaft. Each pinion has a planetary gear engaged with the sun gear, and planetary gears having the number of teeth different from that of that planetary gear. Each internal gear engaged with these planetary gears can perform a independent rotating motion by the rotation of the input shaft. The braking force is selectively applied to the rotating motion of each internal gear by pressing breaking part by the actuator in selecting a gear for gearshift. Here, the braking force is gradually increased to stop the rotating motion. As a result, the a power interrupter becomes unnecessary and the miniaturization of the transmission can be attained.
